Messages in this thread Patch in this message | | | Date | Sun, 7 Jan 2024 14:16:57 +0100 | From | Aleksander Mazur <> | Subject | [PATCH] x86/Kconfig: Transmeta Crusoe is cpu family 5, not 6 |
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I found out I am no longer able to boot kernel compiled with CONFIG_MCRUSOE=y on my HP t5300 with CPU: Transmeta(tm) Crusoe(tm) Processor TM5500 (family: 0x5, model: 0x4, stepping: 0x3). It says:
> This kernel requires an i686 CPU, but only detected an i586 CPU. > Unable to boot - please use a kernel appropriate for your CPU.
It looks like this is caused by 25d76ac888216c369dea91768764728b83769799 which started setting X86_MINIMUM_CPU_FAMILY=6 for MCRUSOE while CPUID gives family=5.
I was able to fix the problem with a patch included below. It just changes X86_MINIMUM_CPU_FAMILY to 5. No other change was necessary (using -march=i686 seems fine).
/proc/cpuinfo: processor : 0 vendor_id : GenuineTMx86 cpu family : 5 model : 4 model name : Transmeta(tm) Crusoe(tm) Processor TM5500 stepping : 3 cpu MHz : 532.091 cache size : 256 KB fdiv_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr cx8 sep cmov mmx longrun lrti constant_tsc cpuid bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs itlb_multihit mmio_unknown bogomips : 1064.18 clflush size : 32 cache_alignment : 32 address sizes : 32 bits physical, 32 bits virtual power management:
--- a/arch/x86/Kconfig.cpu +++ b/arch/x86/Kconfig.cpu @@ -375,7 +375,7 @@ config X86_MINIMUM_CPU_FAMILY int default "64" if X86_64 - default "6" if X86_32 && (MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MEFFICEON || MATOM || MCRUSOE || MCORE2 || MK7 || MK8) + default "6" if X86_32 && (MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MEFFICEON || MATOM || MCORE2 || MK7 || MK8) default "5" if X86_32 && X86_CMPXCHG64 default "4"
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